JPS628791U

JPS628791U -

Info

Publication number: JPS628791U
Application number: JP9872285U
Authority: JP
Priority date: 1985-06-27
Filing date: 1985-06-27
Publication date: 1987-01-20

Description

[Brief explanation of the drawing]

第１図は実施例を説明する断面図、第２図は従
来例を説明する断面図である。１，１０……電気音響変換器ユニツト、１ａ，
１１……フレーム、１ｂ，１２……保護ネツト、
１ｃ，１３……駆動部、１ｄ，１４……振動板、
２，２０……端子盤、３，３０……ハウジング、
３ａ，３１……切欠部、３ｂ，３２……貫通孔、
３ｃ，３３……リブ、３３ａ……突状部、４，４
０……弾性リング、４ａ，４１……突条。 FIG. 1 is a sectional view illustrating an embodiment, and FIG. 2 is a sectional view illustrating a conventional example. 1, 10... electroacoustic transducer unit, 1a,
11...Frame, 1b, 12...Protection net,
1c, 13...driver, 1d, 14...diaphragm,
2, 20... terminal board, 3, 30... housing,
3a, 31... cutout, 3b, 32... through hole,
3c, 33...Rib, 33a...Protrusion, 4,4
0...Elastic ring, 4a, 41...Protrusion.

Claims

[Claims for Utility Model Registration] The electroacoustic transducer unit consists of an electroacoustic transducer unit, a terminal board, a housing, and an elastic ring, and the electroacoustic transducer unit has a diaphragm on the front, a frame on the side, a drive part, a terminal board is fixed to the circular outer bottom surface of the driving section and has an outer circumference slightly larger than a diameter of the circular outer bottom surface of the driving section; It is a housing body made of synthetic resin, with a circumferential notch formed on the upper surface or the outer periphery, a through hole for drawing out the lead wire at the lower part, and a tip at an appropriate interval in the circumferential direction in the middle of the inner periphery. A rib forming a retaining protrusion is integrally formed, and the electric sound alarm converter unit is press-fitted inside, and the circumferential portion of the terminal board continuously deforms the rib outward to form a retaining protrusion. The elastic ring has a semicircular cross-section with a width larger than an opening width of a circumferential groove formed between the notch of the housing and the frame and having a concave cross-section on an inner peripheral surface. A holding structure for an electroacoustic transducer, in which a protrusion is integrally formed and elastically expanded so that the protrusion having a semicircular cross section is brought into pressure contact with an open groove portion of the circumferential groove, and elastically engaged with the frame and the housing.